Is this normal???

So I might have ovarian cysts (going for a scan later today) and my period was due 3 days ago and still no signs or anything. Impossible for me to be pregnant unless I’m 5 months gone but still had regular periods lol😂 anyway I have a sharp painful burning sensation in my lower right side and I’m not sure whether I have a cyst an if so will that effect my period because I’m bloated my boobs hurt and I have all the symptoms. I’m also not on any birth control stopped taking the pill a few months ago so that’s not the reason. Any feedback is accepted just need reassuring. Thankyou.